| abstract |
Phosphonic diesters, capable of being employed as intermediates for making herbicides, having the formula ##STR1## in which R denotes a hydrogenolyzable group; preferably an arylalkyl group, n R 1 denotes a hydrolyzable group, n R 2 denotes a hydrogen atom or hydrolyzable group such as those defined for R 1 . n Preparation of the compounds of the formula (I) from phosphites, formaldehyde and N-substituted glycine esters. |